| SPDX identifier | PSF-2.0 |
|---|---|
| Debian FSG compatible | Yes |
| FSFapproved | Yes[1] |
| OSIapproved | Yes[2] |
| GPL compatible | Yes[1] |
| Copyleft | No |
ThePython Software Foundation License (PSFL) is aBSD-style,permissive software license which iscompatible with theGNU General Public License (GPL).[1] Its primary use is for distribution of thePython project software and its documentation.[3] Since the license ispermissive, it allowsproprietization of thederivations. The PSFL is listed as approved on bothFSF's approved licenses list,[1] andOSI's approved licenses list.
This license is also known as "Python License 2.0.1".[4]
In 2000, Python(specifically version 2.1) was briefly available under thePython License, which is incompatible with the GPL. The reason given for this incompatibility byFree Software Foundation was that "this Python license is governed by the laws of the 'State of Virginia', in the USA", which the GPL does not permit.[5]
Guido van Rossum, Python's creator, was awarded the 2001Free Software Foundation Award for the Advancement of Free Software[6] for changing the license to fix this incompatibility.
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